<!DOCTYPE html>
<html lang="ja">
<head>
    <meta http-equiv="content-type" content="text/html;charset=utf-8"/>
    <meta name="viewport" content="width=device-width, initial-scale=1.0"/>
    <meta name="description" content="U-Net実験用のCarvanaデータセット。"/>

    <meta name="twitter:card" content="summary"/>
    <meta name="twitter:image:src" content="https://avatars1.githubusercontent.com/u/64068543?s=400&amp;v=4"/>
    <meta name="twitter:title" content="U-Net実験用のCarvanaデータセット"/>
    <meta name="twitter:description" content="U-Net実験用のCarvanaデータセット。"/>
    <meta name="twitter:site" content="@labmlai"/>
    <meta name="twitter:creator" content="@labmlai"/>

    <meta property="og:url" content="https://nn.labml.ai/unet/carvana.html"/>
    <meta property="og:title" content="U-Net実験用のCarvanaデータセット"/>
    <meta property="og:image" content="https://avatars1.githubusercontent.com/u/64068543?s=400&amp;v=4"/>
    <meta property="og:site_name" content="U-Net実験用のCarvanaデータセット"/>
    <meta property="og:type" content="object"/>
    <meta property="og:title" content="U-Net実験用のCarvanaデータセット"/>
    <meta property="og:description" content="U-Net実験用のCarvanaデータセット。"/>

    <title>U-Net実験用のCarvanaデータセット</title>
    <link rel="shortcut icon" href="/icon.png"/>
    <link rel="stylesheet" href="../pylit.css?v=1">
    <link rel="canonical" href="https://nn.labml.ai/unet/carvana.html"/>
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex@0.13.18/dist/katex.min.css" integrity="sha384-zTROYFVGOfTw7JV7KUu8udsvW2fx4lWOsCEDqhBreBwlHI4ioVRtmIvEThzJHGET" crossorigin="anonymous">

    <!-- Global site tag (gtag.js) - Google Analytics -->
    <script async src="https://www.googletagmanager.com/gtag/js?id=G-4V3HC8HBLH"></script>
    <script>
        window.dataLayer = window.dataLayer || [];

        function gtag() {
            dataLayer.push(arguments);
        }

        gtag('js', new Date());

        gtag('config', 'G-4V3HC8HBLH');
    </script>
</head>
<body>
<div id='container'>
    <div id="background"></div>
    <div class='section'>
        <div class='docs'>
            <p>
                <a class="parent" href="/">home</a>
                <a class="parent" href="index.html">unet</a>
            </p>
            <p>
                <a href="https://github.com/labmlai/annotated_deep_learning_paper_implementations" target="_blank">
                    <img alt="Github"
                         src="https://img.shields.io/github/stars/labmlai/annotated_deep_learning_paper_implementations?style=social"
                         style="max-width:100%;"/></a>
                <a href="https://twitter.com/labmlai" rel="nofollow" target="_blank">
                    <img alt="Twitter"
                         src="https://img.shields.io/twitter/follow/labmlai?style=social"
                         style="max-width:100%;"/></a>
            </p>
            <p>
                <a href="https://github.com/labmlai/annotated_deep_learning_paper_implementations/tree/master/labml_nn/unet/carvana.py" target="_blank">
                    View code on Github</a>
            </p>
        </div>
    </div>
    <div class='section' id='section-0'>
        <div class='docs doc-strings'>
            <div class='section-link'>
                <a href='#section-0'>#</a>
            </div>
            <h1><a href="index.html"><a href="experiment.html">U-Net実験用のカルバナデータセット</a></a></h1>
<p>ダウンロード手順は <a href="https://www.kaggle.com/competitions/carvana-image-masking-challenge/data">Kaggle で確認できます</a>。</p>
<p><code  class="highlight"><span></span><span class="n">carvana</span><span class="o">/</span><span class="n">train</span></code>
トレーニング画像をフォルダー内に保存し、<code  class="highlight"><span></span><span class="n">carvana</span><span class="o">/</span><span class="n">train_masks</span></code>
マスクをフォルダーに保存します。</p>

        </div>
        <div class='code'>
            <div class="highlight"><pre><span class="lineno">16</span><span></span><span class="kn">from</span> <span class="nn">torch</span> <span class="kn">import</span> <span class="n">nn</span>
<span class="lineno">17</span><span class="kn">from</span> <span class="nn">pathlib</span> <span class="kn">import</span> <span class="n">Path</span>
<span class="lineno">18</span>
<span class="lineno">19</span><span class="kn">import</span> <span class="nn">torch.utils.data</span>
<span class="lineno">20</span><span class="kn">import</span> <span class="nn">torchvision.transforms.functional</span>
<span class="lineno">21</span><span class="kn">from</span> <span class="nn">PIL</span> <span class="kn">import</span> <span class="n">Image</span>
<span class="lineno">22</span>
<span class="lineno">23</span><span class="kn">from</span> <span class="nn">labml</span> <span class="kn">import</span> <span class="n">lab</span></pre></div>
        </div>
    </div>
    <div class='section' id='section-1'>
        <div class='docs doc-strings'>
            <div class='section-link'>
                <a href='#section-1'>#</a>
            </div>
            <h2>カーバナデータセット</h2>

        </div>
        <div class='code'>
            <div class="highlight"><pre><span class="lineno">26</span><span class="k">class</span> <span class="nc">CarvanaDataset</span><span class="p">(</span><span class="n">torch</span><span class="o">.</span><span class="n">utils</span><span class="o">.</span><span class="n">data</span><span class="o">.</span><span class="n">Dataset</span><span class="p">):</span></pre></div>
        </div>
    </div>
    <div class='section' id='section-2'>
        <div class='docs doc-strings'>
            <div class='section-link'>
                <a href='#section-2'>#</a>
            </div>
            <ul><li><code  class="highlight"><span></span><span class="n">image_path</span></code>
画像へのパスです</li>
<li><code  class="highlight"><span></span><span class="n">mask_path</span></code>
マスクへの道です</li></ul>

        </div>
        <div class='code'>
            <div class="highlight"><pre><span class="lineno">31</span>    <span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">image_path</span><span class="p">:</span> <span class="n">Path</span><span class="p">,</span> <span class="n">mask_path</span><span class="p">:</span> <span class="n">Path</span><span class="p">):</span></pre></div>
        </div>
    </div>
    <div class='section' id='section-3'>
        <div class='docs'>
            <div class='section-link'>
                <a href='#section-3'>#</a>
            </div>
            <p>ID で画像の辞書を取得</p>

        </div>
        <div class='code'>
            <div class="highlight"><pre><span class="lineno">37</span>        <span class="bp">self</span><span class="o">.</span><span class="n">images</span> <span class="o">=</span> <span class="p">{</span><span class="n">p</span><span class="o">.</span><span class="n">stem</span><span class="p">:</span> <span class="n">p</span> <span class="k">for</span> <span class="n">p</span> <span class="ow">in</span> <span class="n">image_path</span><span class="o">.</span><span class="n">iterdir</span><span class="p">()}</span></pre></div>
        </div>
    </div>
    <div class='section' id='section-4'>
        <div class='docs'>
            <div class='section-link'>
                <a href='#section-4'>#</a>
            </div>
            <p>ID でマスクの辞書を取得</p>

        </div>
        <div class='code'>
            <div class="highlight"><pre><span class="lineno">39</span>        <span class="bp">self</span><span class="o">.</span><span class="n">masks</span> <span class="o">=</span> <span class="p">{</span><span class="n">p</span><span class="o">.</span><span class="n">stem</span><span class="p">[:</span><span class="o">-</span><span class="mi">5</span><span class="p">]:</span> <span class="n">p</span> <span class="k">for</span> <span class="n">p</span> <span class="ow">in</span> <span class="n">mask_path</span><span class="o">.</span><span class="n">iterdir</span><span class="p">()}</span></pre></div>
        </div>
    </div>
    <div class='section' id='section-5'>
        <div class='docs'>
            <div class='section-link'>
                <a href='#section-5'>#</a>
            </div>
            <p>画像IDリスト</p>

        </div>
        <div class='code'>
            <div class="highlight"><pre><span class="lineno">42</span>        <span class="bp">self</span><span class="o">.</span><span class="n">ids</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">images</span><span class="o">.</span><span class="n">keys</span><span class="p">())</span></pre></div>
        </div>
    </div>
    <div class='section' id='section-6'>
        <div class='docs'>
            <div class='section-link'>
                <a href='#section-6'>#</a>
            </div>
            <p>トランスフォーメーション</p>

        </div>
        <div class='code'>
            <div class="highlight"><pre><span class="lineno">45</span>        <span class="bp">self</span><span class="o">.</span><span class="n">transforms</span> <span class="o">=</span> <span class="n">torchvision</span><span class="o">.</span><span class="n">transforms</span><span class="o">.</span><span class="n">Compose</span><span class="p">([</span>
<span class="lineno">46</span>            <span class="n">torchvision</span><span class="o">.</span><span class="n">transforms</span><span class="o">.</span><span class="n">Resize</span><span class="p">(</span><span class="mi">572</span><span class="p">),</span>
<span class="lineno">47</span>            <span class="n">torchvision</span><span class="o">.</span><span class="n">transforms</span><span class="o">.</span><span class="n">ToTensor</span><span class="p">(),</span>
<span class="lineno">48</span>        <span class="p">])</span></pre></div>
        </div>
    </div>
    <div class='section' id='section-7'>
        <div class='docs doc-strings'>
            <div class='section-link'>
                <a href='#section-7'>#</a>
            </div>
            <h4>画像とそのマスクを入手してください。</h4>
<ul><li><code  class="highlight"><span></span><span class="n">idx</span></code>
は画像のインデックスです</li></ul>

        </div>
        <div class='code'>
            <div class="highlight"><pre><span class="lineno">50</span>    <span class="k">def</span> <span class="fm">__getitem__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">idx</span><span class="p">:</span> <span class="nb">int</span><span class="p">):</span></pre></div>
        </div>
    </div>
    <div class='section' id='section-8'>
        <div class='docs'>
            <div class='section-link'>
                <a href='#section-8'>#</a>
            </div>
            <p>画像 ID を取得</p>

        </div>
        <div class='code'>
            <div class="highlight"><pre><span class="lineno">58</span>        <span class="n">id_</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">ids</span><span class="p">[</span><span class="n">idx</span><span class="p">]</span></pre></div>
        </div>
    </div>
    <div class='section' id='section-9'>
        <div class='docs'>
            <div class='section-link'>
                <a href='#section-9'>#</a>
            </div>
            <p>画像を読み込む</p>

        </div>
        <div class='code'>
            <div class="highlight"><pre><span class="lineno">60</span>        <span class="n">image</span> <span class="o">=</span> <span class="n">Image</span><span class="o">.</span><span class="n">open</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">images</span><span class="p">[</span><span class="n">id_</span><span class="p">])</span></pre></div>
        </div>
    </div>
    <div class='section' id='section-10'>
        <div class='docs'>
            <div class='section-link'>
                <a href='#section-10'>#</a>
            </div>
            <p>画像を変換して PyTorch テンソルに変換する</p>

        </div>
        <div class='code'>
            <div class="highlight"><pre><span class="lineno">62</span>        <span class="n">image</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">transforms</span><span class="p">(</span><span class="n">image</span><span class="p">)</span></pre></div>
        </div>
    </div>
    <div class='section' id='section-11'>
        <div class='docs'>
            <div class='section-link'>
                <a href='#section-11'>#</a>
            </div>
            <p>ロードマスク</p>

        </div>
        <div class='code'>
            <div class="highlight"><pre><span class="lineno">64</span>        <span class="n">mask</span> <span class="o">=</span> <span class="n">Image</span><span class="o">.</span><span class="n">open</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">masks</span><span class="p">[</span><span class="n">id_</span><span class="p">])</span></pre></div>
        </div>
    </div>
    <div class='section' id='section-12'>
        <div class='docs'>
            <div class='section-link'>
                <a href='#section-12'>#</a>
            </div>
            <p>マスクを変換して PyTorch テンソルに変換する</p>

        </div>
        <div class='code'>
            <div class="highlight"><pre><span class="lineno">66</span>        <span class="n">mask</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">transforms</span><span class="p">(</span><span class="n">mask</span><span class="p">)</span></pre></div>
        </div>
    </div>
    <div class='section' id='section-13'>
        <div class='docs'>
            <div class='section-link'>
                <a href='#section-13'>#</a>
            </div>
            <p>マスク値はなかったので<span ><span class="katex"><span aria-hidden="true" class="katex-html"><span class="base"><span class="strut" style="height:0.64444em;vertical-align:0em;"></span><span class="mord">1</span></span></span></span></span>、適切にスケーリングしました。</p>

        </div>
        <div class='code'>
            <div class="highlight"><pre><span class="lineno">69</span>        <span class="n">mask</span> <span class="o">=</span> <span class="n">mask</span> <span class="o">/</span> <span class="n">mask</span><span class="o">.</span><span class="n">max</span><span class="p">()</span></pre></div>
        </div>
    </div>
    <div class='section' id='section-14'>
        <div class='docs'>
            <div class='section-link'>
                <a href='#section-14'>#</a>
            </div>
            <p>画像とマスクを返す</p>

        </div>
        <div class='code'>
            <div class="highlight"><pre><span class="lineno">72</span>        <span class="k">return</span> <span class="n">image</span><span class="p">,</span> <span class="n">mask</span></pre></div>
        </div>
    </div>
    <div class='section' id='section-15'>
        <div class='docs doc-strings'>
            <div class='section-link'>
                <a href='#section-15'>#</a>
            </div>
            <h4>データセットのサイズ</h4>

        </div>
        <div class='code'>
            <div class="highlight"><pre><span class="lineno">74</span>    <span class="k">def</span> <span class="fm">__len__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span></pre></div>
        </div>
    </div>
    <div class='section' id='section-16'>
        <div class='docs'>
            <div class='section-link'>
                <a href='#section-16'>#</a>
            </div>
            
        </div>
        <div class='code'>
            <div class="highlight"><pre><span class="lineno">78</span>        <span class="k">return</span> <span class="nb">len</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">ids</span><span class="p">)</span></pre></div>
        </div>
    </div>
    <div class='section' id='section-17'>
        <div class='docs'>
            <div class='section-link'>
                <a href='#section-17'>#</a>
            </div>
            <p>テストコード</p>

        </div>
        <div class='code'>
            <div class="highlight"><pre><span class="lineno">82</span><span class="k">if</span> <span class="vm">__name__</span> <span class="o">==</span> <span class="s1">&#39;__main__&#39;</span><span class="p">:</span>
<span class="lineno">83</span>    <span class="n">ds</span> <span class="o">=</span> <span class="n">CarvanaDataset</span><span class="p">(</span><span class="n">lab</span><span class="o">.</span><span class="n">get_data_path</span><span class="p">()</span> <span class="o">/</span> <span class="s1">&#39;carvana&#39;</span> <span class="o">/</span> <span class="s1">&#39;train&#39;</span><span class="p">,</span> <span class="n">lab</span><span class="o">.</span><span class="n">get_data_path</span><span class="p">()</span> <span class="o">/</span> <span class="s1">&#39;carvana&#39;</span> <span class="o">/</span> <span class="s1">&#39;train_masks&#39;</span><span class="p">)</span></pre></div>
        </div>
    </div>
    <div class='footer'>
        <a href="https://papers.labml.ai">Trending Research Papers</a>
        <a href="https://labml.ai">labml.ai</a>
    </div>
</div>
<script src=../interactive.js?v=1"></script>
<script>
    function handleImages() {
        var images = document.querySelectorAll('p>img')

        for (var i = 0; i < images.length; ++i) {
            handleImage(images[i])
        }
    }

    function handleImage(img) {
        img.parentElement.style.textAlign = 'center'

        var modal = document.createElement('div')
        modal.id = 'modal'

        var modalContent = document.createElement('div')
        modal.appendChild(modalContent)

        var modalImage = document.createElement('img')
        modalContent.appendChild(modalImage)

        var span = document.createElement('span')
        span.classList.add('close')
        span.textContent = 'x'
        modal.appendChild(span)

        img.onclick = function () {
            console.log('clicked')
            document.body.appendChild(modal)
            modalImage.src = img.src
        }

        span.onclick = function () {
            document.body.removeChild(modal)
        }
    }

    handleImages()
</script>
</body>
</html>